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It is possible that it was unaware of the ACGIH's reliance on norming, that it arrived at these standards after some other type of analysis, and that the resemblance to norming is mere coincidence.
The 8-h weighted mean concentration of personal dust exposure was calculated and compared to the acceptable concentration of 3 mg/[m.sup.3] for an "unclassifiable non-water soluble or insoluble substance," as defined by the ACGIH. The results by year and factory from 2004 to 2013 are shown in the Figure 2.
A case of mercury exposure was defined as a urine spot mercury level above the ACGIH biologic exposure index of 20.0 [micro]g/g creatinine in a facility worker.
Threshold values of the WBGT index according to ACGIH (2004).
The reference for this process can be found on the ACGIH website (www.acgih.org).
Table 2 shows that the minimum and maximum concentrations of PERC in position 2 exceeded the ACGIH STEL and UAE STEL Standards.
In 1998 the American Conference of Governmental Industrial Hygienists (ACGIH) published separated threshold values for the organic and inorganic forms of Ni .
El Manual de Ventilacion Industrial, de la American Conference of Governmental Industrial Hygienists (ACGIH, 1995), especifica valores de la velocidad minima de flujo de aire para evitar la sedimentacion de las particulas solidas transportadas.
In five of the 29 participants, the concentration of muconic acid surpassed the biological exposure index (BEI), a measure developed by the American Conference of Governmental Industrial Hygienists (ACGIH) to protect the health of people in the workplace.
Another standard for measuring safe exposure to chemicals is Threshold Limit Values (TLV) set by the America Conference of Governmental Industrial Hygienists (ACGIH).
El valor limite umbral establecido por la acgih (American Conference of Governmental Industrial Hygienists) es de 0,3 ppm, concentracion riesgosa, que bajo ninguna circunstancia debe excederse.
[36.] American Conference of Governmental Industrial Hygienists (ACGIH), Threshold limit values for chemical substances and physical agents and biological exposure indices, American Conference of Governmental Industrial Hygienists, Cincinnati, 1992-1993.
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